author | twisti |
Wed, 25 Aug 2010 05:27:54 -0700 | |
changeset 6418 | 6671edbd230e |
parent 5883 | 8dc4bdc132d5 |
child 6434 | abf40e412476 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "incls/_precompiled.incl" |
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#include "incls/_stubRoutines.cpp.incl" |
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// Implementation of StubRoutines - for a description |
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// of how to extend it, see the header file. |
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// Class Variables |
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||
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BufferBlob* StubRoutines::_code1 = NULL; |
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BufferBlob* StubRoutines::_code2 = NULL; |
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address StubRoutines::_call_stub_return_address = NULL; |
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address StubRoutines::_call_stub_entry = NULL; |
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address StubRoutines::_catch_exception_entry = NULL; |
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address StubRoutines::_forward_exception_entry = NULL; |
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address StubRoutines::_throw_AbstractMethodError_entry = NULL; |
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address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL; |
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address StubRoutines::_throw_ArithmeticException_entry = NULL; |
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address StubRoutines::_throw_NullPointerException_entry = NULL; |
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address StubRoutines::_throw_NullPointerException_at_call_entry = NULL; |
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address StubRoutines::_throw_StackOverflowError_entry = NULL; |
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address StubRoutines::_handler_for_unsafe_access_entry = NULL; |
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jint StubRoutines::_verify_oop_count = 0; |
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address StubRoutines::_verify_oop_subroutine_entry = NULL; |
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address StubRoutines::_atomic_xchg_entry = NULL; |
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address StubRoutines::_atomic_xchg_ptr_entry = NULL; |
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address StubRoutines::_atomic_store_entry = NULL; |
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address StubRoutines::_atomic_store_ptr_entry = NULL; |
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address StubRoutines::_atomic_cmpxchg_entry = NULL; |
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address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL; |
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address StubRoutines::_atomic_cmpxchg_long_entry = NULL; |
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address StubRoutines::_atomic_add_entry = NULL; |
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address StubRoutines::_atomic_add_ptr_entry = NULL; |
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address StubRoutines::_fence_entry = NULL; |
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address StubRoutines::_d2i_wrapper = NULL; |
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address StubRoutines::_d2l_wrapper = NULL; |
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jint StubRoutines::_fpu_cntrl_wrd_std = 0; |
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jint StubRoutines::_fpu_cntrl_wrd_24 = 0; |
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jint StubRoutines::_fpu_cntrl_wrd_64 = 0; |
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jint StubRoutines::_fpu_cntrl_wrd_trunc = 0; |
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jint StubRoutines::_mxcsr_std = 0; |
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jint StubRoutines::_fpu_subnormal_bias1[3] = { 0, 0, 0 }; |
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jint StubRoutines::_fpu_subnormal_bias2[3] = { 0, 0, 0 }; |
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// Compiled code entry points default values |
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// The dafault functions don't have separate disjoint versions. |
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address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); |
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address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); |
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address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); |
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address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); |
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address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); |
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address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); |
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address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); |
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address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); |
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address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); |
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address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); |
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address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); |
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address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); |
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address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); |
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address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); |
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address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); |
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address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); |
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address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); |
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address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); |
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address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); |
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address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); |
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address StubRoutines::_checkcast_arraycopy = NULL; |
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address StubRoutines::_unsafe_arraycopy = NULL; |
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address StubRoutines::_generic_arraycopy = NULL; |
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double (* StubRoutines::_intrinsic_log )(double) = NULL; |
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double (* StubRoutines::_intrinsic_log10 )(double) = NULL; |
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double (* StubRoutines::_intrinsic_exp )(double) = NULL; |
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double (* StubRoutines::_intrinsic_pow )(double, double) = NULL; |
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double (* StubRoutines::_intrinsic_sin )(double) = NULL; |
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double (* StubRoutines::_intrinsic_cos )(double) = NULL; |
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double (* StubRoutines::_intrinsic_tan )(double) = NULL; |
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// Initialization |
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// |
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// Note: to break cycle with universe initialization, stubs are generated in two phases. |
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// The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry). |
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// The second phase includes all other stubs (which may depend on universe being initialized.) |
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extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators |
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void StubRoutines::initialize1() { |
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if (_code1 == NULL) { |
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ResourceMark rm; |
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TraceTime timer("StubRoutines generation 1", TraceStartupTime); |
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_code1 = BufferBlob::create("StubRoutines (1)", code_size1); |
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if (_code1 == NULL) { |
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vm_exit_out_of_memory(code_size1, "CodeCache: no room for StubRoutines (1)"); |
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} |
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CodeBuffer buffer(_code1); |
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StubGenerator_generate(&buffer, false); |
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} |
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} |
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#ifdef ASSERT |
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typedef void (*arraycopy_fn)(address src, address dst, int count); |
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// simple tests of generated arraycopy functions |
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static void test_arraycopy_func(address func, int alignment) { |
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int v = 0xcc; |
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int v2 = 0x11; |
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jlong lbuffer[8]; |
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jlong lbuffer2[8]; |
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address fbuffer = (address) lbuffer; |
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address fbuffer2 = (address) lbuffer2; |
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unsigned int i; |
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for (i = 0; i < sizeof(lbuffer); i++) { |
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fbuffer[i] = v; fbuffer2[i] = v2; |
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} |
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// C++ does not guarantee jlong[] array alignment to 8 bytes. |
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// Use middle of array to check that memory before it is not modified. |
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address buffer = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong); |
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address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong); |
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// do an aligned copy |
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((arraycopy_fn)func)(buffer, buffer2, 0); |
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for (i = 0; i < sizeof(lbuffer); i++) { |
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assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
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} |
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// adjust destination alignment |
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((arraycopy_fn)func)(buffer, buffer2 + alignment, 0); |
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for (i = 0; i < sizeof(lbuffer); i++) { |
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assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
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} |
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// adjust source alignment |
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((arraycopy_fn)func)(buffer + alignment, buffer2, 0); |
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for (i = 0; i < sizeof(lbuffer); i++) { |
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assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
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} |
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} |
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#endif |
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void StubRoutines::initialize2() { |
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if (_code2 == NULL) { |
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ResourceMark rm; |
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TraceTime timer("StubRoutines generation 2", TraceStartupTime); |
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_code2 = BufferBlob::create("StubRoutines (2)", code_size2); |
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if (_code2 == NULL) { |
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vm_exit_out_of_memory(code_size2, "CodeCache: no room for StubRoutines (2)"); |
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} |
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CodeBuffer buffer(_code2); |
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StubGenerator_generate(&buffer, true); |
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} |
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#ifdef ASSERT |
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#define TEST_ARRAYCOPY(type) \ |
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test_arraycopy_func( type##_arraycopy(), sizeof(type)); \ |
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test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \ |
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test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \ |
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test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord)) |
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// Make sure all the arraycopy stubs properly handle zero count |
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TEST_ARRAYCOPY(jbyte); |
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TEST_ARRAYCOPY(jshort); |
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TEST_ARRAYCOPY(jint); |
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TEST_ARRAYCOPY(jlong); |
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#undef TEST_ARRAYCOPY |
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#define TEST_COPYRTN(type) \ |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \ |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type))) |
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// Make sure all the copy runtime routines properly handle zero count |
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TEST_COPYRTN(jbyte); |
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TEST_COPYRTN(jshort); |
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TEST_COPYRTN(jint); |
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TEST_COPYRTN(jlong); |
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#undef TEST_COPYRTN |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord)); |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord)); |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord)); |
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// Aligned to BytesPerLong |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong)); |
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test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong)); |
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1 | 215 |
#endif |
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} |
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void stubRoutines_init1() { StubRoutines::initialize1(); } |
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void stubRoutines_init2() { StubRoutines::initialize2(); } |
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// |
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// Default versions of arraycopy functions |
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// |
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static void gen_arraycopy_barrier_pre(oop* dest, size_t count) { |
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assert(count != 0, "count should be non-zero"); |
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assert(count <= (size_t)max_intx, "count too large"); |
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BarrierSet* bs = Universe::heap()->barrier_set(); |
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assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt"); |
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bs->write_ref_array_pre(dest, (int)count); |
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} |
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|
1 | 234 |
static void gen_arraycopy_barrier(oop* dest, size_t count) { |
235 |
assert(count != 0, "count should be non-zero"); |
|
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BarrierSet* bs = Universe::heap()->barrier_set(); |
|
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assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
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bs->write_ref_array((HeapWord*)dest, count); |
1 | 239 |
} |
240 |
||
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JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) |
|
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#ifndef PRODUCT |
|
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SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy |
|
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#endif // !PRODUCT |
|
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Copy::conjoint_jbytes_atomic(src, dest, count); |
1 | 246 |
JRT_END |
247 |
||
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JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) |
|
249 |
#ifndef PRODUCT |
|
250 |
SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy |
|
251 |
#endif // !PRODUCT |
|
252 |
Copy::conjoint_jshorts_atomic(src, dest, count); |
|
253 |
JRT_END |
|
254 |
||
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JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) |
|
256 |
#ifndef PRODUCT |
|
257 |
SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy |
|
258 |
#endif // !PRODUCT |
|
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Copy::conjoint_jints_atomic(src, dest, count); |
|
260 |
JRT_END |
|
261 |
||
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JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) |
|
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#ifndef PRODUCT |
|
264 |
SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy |
|
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#endif // !PRODUCT |
|
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Copy::conjoint_jlongs_atomic(src, dest, count); |
|
267 |
JRT_END |
|
268 |
||
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JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) |
|
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#ifndef PRODUCT |
|
271 |
SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy |
|
272 |
#endif // !PRODUCT |
|
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assert(count != 0, "count should be non-zero"); |
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gen_arraycopy_barrier_pre(dest, count); |
1 | 275 |
Copy::conjoint_oops_atomic(src, dest, count); |
276 |
gen_arraycopy_barrier(dest, count); |
|
277 |
JRT_END |
|
278 |
||
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JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) |
|
280 |
#ifndef PRODUCT |
|
281 |
SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy |
|
282 |
#endif // !PRODUCT |
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Copy::arrayof_conjoint_jbytes(src, dest, count); |
1 | 284 |
JRT_END |
285 |
||
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JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) |
|
287 |
#ifndef PRODUCT |
|
288 |
SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy |
|
289 |
#endif // !PRODUCT |
|
290 |
Copy::arrayof_conjoint_jshorts(src, dest, count); |
|
291 |
JRT_END |
|
292 |
||
293 |
JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) |
|
294 |
#ifndef PRODUCT |
|
295 |
SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy |
|
296 |
#endif // !PRODUCT |
|
297 |
Copy::arrayof_conjoint_jints(src, dest, count); |
|
298 |
JRT_END |
|
299 |
||
300 |
JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) |
|
301 |
#ifndef PRODUCT |
|
302 |
SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy |
|
303 |
#endif // !PRODUCT |
|
304 |
Copy::arrayof_conjoint_jlongs(src, dest, count); |
|
305 |
JRT_END |
|
306 |
||
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JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) |
|
308 |
#ifndef PRODUCT |
|
309 |
SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy |
|
310 |
#endif // !PRODUCT |
|
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assert(count != 0, "count should be non-zero"); |
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gen_arraycopy_barrier_pre((oop *) dest, count); |
1 | 313 |
Copy::arrayof_conjoint_oops(src, dest, count); |
314 |
gen_arraycopy_barrier((oop *) dest, count); |
|
315 |
JRT_END |